I am having problems uploading large files, ~30mb or larger. I get a page that says 'The system cannot find the file specified. ' Any ideas? There is no limit defined in the PureASPUpload dialogue box

Check that your host hasn't placed a limit on files uploaded.

IT says the limit it much higher than the file I'm attempting. I don't get a windows error. The URL is upload.domain.com/main.asp?GP_upload=true&UploadId=95828022 and the error is just black text on a white background that says, 'The system cannot find the file specified.' I've done a search in the code of all the PU files, but can't find that error message anywhere. Where is it coming from?

The file limit for ASP is 1GB and 400MB for ASP.NET. Any other ideas? Need to get this resolved.

Figured it out. There is a Microsoft utility called URLscan that had a limit set to 30GB for uploads. Increased the limit and all is well. It is located in directory C:\Windows\system32\inetsrv\urlscan. Navigate to this directory and edit the urlscan.ini file.